Improvement



l t UNITED STATES-PATENT ()n11`cn'.r

w Ae e n n W ni GH fr, o n- SPRINGFIELD, oeil-of Specification forming part ofLet-tcrs Patent Nb.'118,332, lated`=June 2l), I

.'Be `it known thatI, WARREN WRIGHT, of Springfield, Clarke county, Ohio,ha,veinvented a new and useful Improvement in Honiiny- Mills; and l do "herebydeclare the following 4 to be a full, clear, and exact description thereof, l' reference being had to theaccompanyin g drailvings, making part of this specification.

`My invention relates to an arrangement off parts in a hom-iny-mill which insures an equal'- and uniform conversion of all of thcornjinto `hoin-iny of good merchantahle quality.

Figure l san axial section througha mill;-

` embodying'my improvements.' Fig, 2 `shows` one of the cylindrical screens detached. Fig. 3 represents one of the vtwo parted and symmet,

ricalfloors," I I A is a baseer-foot, from which 'rise p sts'B,"

' supporting a fan-case, C, which itselfsupports' a discharging-chamber, D. Both the fan-case `(l and the discharge-chamber D empty into a spout, E, having adescending ventage, e, v for wthehominy, andan ascending ventage,1i, for

1 that portion of the dust which has been drawn `down the interior of the shaft by the suction, and down Y the central apertures of` the dia."

phragms G G Gr2 representl a series of annular ioors or diaphragms, each of which is formed of two.

halves, as 'shown in Fig. 3, cast from a comnion semicircular pattern. The saiddiaphragms. are precisely alike and symmetrical on both sides,and eachtloor the exact duplicate or copy of every other. Each floor has a central circu-v lar aperture, y, having marginal rims or lips g and g above and below. Circular grooves g., immediately within the outer margins of the doors on their upper sides, and precisely similar grooves, 9", on their lower sides, receive and hold'the edges of'a series, of peculiarly-formed cylindricalorring-shaped screens, HB H, &c.,

which, with the diaphragms, as above, constitute the mainportion of my case., Each of said screens is cast in a single piece from a common or single pattern, and is traversed by a series of slits or narrow p'ert'ation s, h, which jflare from withiuoutward, and which, commencing near the top of the screen,pass outward through the .bottom edge thereof.

formed iseasily cast in one 'entire ring orcyl-l I 1nder,which,in thedescribed ,combination'vvithj ythe'd iaphragms,&c., com poses a very staunch "lhel screen thus 'and compaetcasaivhich is free from the: vopen jointsand insecurityincident vto casesgwith lon;

gitiidinal joints.

I is acap havingan aperture,"J, to receive grain fromany suitable shoe or hopper, and tol conduct it onto a; funneLK, whose-centralapthe upperinost"hull ing erta-re, 7c, leads finto compartment.

the shaft communicates at bottom with the center ofthe'iaincase The-shaftL flares" ex-V' ternallydownward, so as to causethe apertures .12N 3, between 'the diaphrag'rns Vand theI` shaft, to decreaseiin farea toward` 4the Alov'ver `part of thefm'ilLj l" 1 o is apu'lieylbywnieh the snaftfis rotated' about onethousandrevolutionsV per minute.

` -U is awingtodischargethe hominy into the Y landinclined planes Rl, so as toenable-'the simultaneous expansion or contraction 'of the entire Y series of annular passages :between ,the shaft' and the internal margins of the diapliragms. S is a set-.screw for holding the step at any desiredadjustment; lil-place of the above the stop B may he adjusted by a set-screwor .lever beariug directly Aupward against it.

`{lI are fourof a series Vof eight rods which confineall the above parts securely together. y For convenience ot' illustration, a'mill with but three compartments is here shown, being but half the number employed in actual use..

The operation isf as follows: The mill'being 'set iu motion,`corn isfed inithroughthe hop# per, and descendinginto the, upper compa-rt#` mentiltsvkerne'ls `are driven violently against the vertically-slotted screen "by the laction lof 'the ribbed blades M, `u"n 'tilthecompartmentV becomes chargedwith grain, after wlclrthc ,incoming portions act tozcrowd thelower strata 0f grain toward the annular passage il-between thel diaphragm and the shaft. Inthelact of approaching thermarginpof the passage l the `grains are arrestedb'y the "lip g, and being caught by one of the blades. are projected again toward thecircumference." This action operates Vto retain the corn'4 in theA mill untileachandj i L is myto11ewiper`frated shaft, having thel A, represented.ribbudblades-or tritura torsM andl numerous minuteapertures l. *The interior'of- The .s'l'iaitL-frests'in step,. P',' wjvhich is ad; justablc vertically by ,means of a handle, Qf

every com partment becomes fully charged with grain, after which the entire volume moves steadily downward by a helical motionto the place of discharge. From and after the complete charging of the compartments the combined action of the blades and suction is not to strike the individual kernels so much as it 'is to rub and triturate them forcibly against each other, and against the screens and diaphragms, resulting in a very thorough hulling action Without much breakin gV or destruction of the kernels. rIhe daphragms are most effective with their original rough-cast surface,

vand as the Wear is most severe on the upper` surfaces and greatest on the upper diaphragins,

the symmetrical and two-parted form of the diaphragms becomes available for transposition andreversalotl the' daphragnis, so a's toy make the comparatively unworn. surfaces take the placcot' those whichhave been scoured smooth. 'The diminution downward of the series of annular passages 1 2 3, 83e., as they approach-the place of discharge, is made just sufficient to counteract the disposition of the contents to escape more freely as they become 'more comininuted and'approach nearer to the suction. The vertical apertures inthe screen .act, in conjunction with the centrifugal force created by the revolving 'shaft and blades, to

Vcarry offsandand other heayy rcfuse,while the lighter particles of dust andpowder are drawn by the suction down the interior of the shaft and down the annular passages 1.2 3, Sac., and are blownout at the spout I.

\ Although the yscreens are here shown with their slits opening downward, that being the preferred position, yet it is evident they may be arranged either upward or downward, as may be desired. l

I claim herein as new and of my intention- 1. In combination with diaphragms G,the series of screens H, formed'so as to be bast in entire cylinders, havingthe longitudinal slits h from their lower to near their upper margins, substantially as set forth.

2. The sericsof symmetrical equal annular andtwo-parte'd diaphragms G G G", capable of transposition and reversal, substantially as and forthe purpose set forth. t

3. The provision of the lip g', or lips g and g, at the interior margin of the annular diaphragms G G. GU, for the purpose explained.

v4. The inclosingfcase, composed of a series of entire cylindrical screens, H H' H, and

inargiually-grooved annular diaphragms GG G", as'represeuted. i.

5. in the described combination ith the series of diaphragms G -G G, having equal central apertures, theflaring" suction-beater L M, substantially as set forth.

6. The arrangement ofdiaphragins G G Gf', having equal central apertures,in combination with .the flaring and vertically-adjustable suction-beater L M, substantially as set forth.

In testimony of which invention I hereunto set my hand.

. WARREN WRIGHT.

Witnesses:

.Luiss H. LAYMAN, GEO. H. KNIGHT. 

